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AWK: row number NR


 
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# 1  
AWK: row number NR

Hi

I've file1 as:

Quote:
0.000000e+00
0.000000e+00
6.66065e-07
4.97646e-05
6.66065e-07
8.8777e-05
0.000000e+00
after I read all rows with awk, I need to change some of them.
I mean, for example if the last row is zero then change row number 4 in zero too.
So I'd like to refers each row as a vector and change its value accordly some conditions. I know that NR keep just the "current" row value.
Is there a way to refers to a specific row ?

thanks

D.
# 2  
Code:
awk '{arr[FNR]=$0}
       END { if (arr[4]=something) { arr[4]=somethingelse}
                for (i=1;i<FNR; i++){print arr[i]}' infile > outfile

FNR is NR for a given file; NR totals all records from all input files.
# 3  
Hi jim

thanks a lot for the fast answ. It works.
D.

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